It seems increasing your attack power does indeed have an effect on the summoned pets (as expected) now the last test will be to see if they update dynamically rather than snapshot.

This screen was captured 10 seconds into the stampede with no buffs of any kind save for the ones stated in the first screen.

This screen was captured after stampede had ended and I had used my trinket once again right after the first screenshot was taken.

So it's not conclusive but it seems the stampede pets do update dynamically to changes in attack power and possibly crit

TL;DR

Stampede isn't affected by BW, it is affected by attack power and crit.
Stampede updates dynamically with attack power and crit so you can use it whenever you feel like it however the best use would be to time it with your cds.
Stampede being affected by +% damage buffs is unknown at the moment.

No, you get 1 non-exotic from your stable and 3 copies of whatever pet you are using as SV. That is, unless they broke it recently. The glyph is only needed if you want all of them to match your current pet for personal reasons. You don't ever need to use the glyph to make sure that you have the correct number of usable pets.

Nope. If you have 3 exotic pets, while being sv/mm, it will make copies of your non exotic main pet.
Example, you have 3 spirit beasts, a wolf and a cat (main). You pop Stampede. You will see 4 cats and 1 wolf.

Oh, and don't use the stampede glyph. If your pet has rabid on cd, all the pets that appear with stampede will have rabid on cd as well, making them do less dmg, vs 5 different pets, with your main pet having rabid on cd, but the other 4 using rabid.

Oh, and don't use the stampede glyph. If your pet has rabid on cd, all the pets that appear with stampede will have rabid on cd as well, making them do less dmg, vs 5 different pets, with your main pet having rabid on cd, but the other 4 using rabid.

I tested this on the target dummy yesterday and found different results. I used the glyph of stampede and triggered rabid on my pet and waited for the buff to fall off. I then cast stampede. The 4 pet clones had the rabid buff when I checked them. Possibly this was hotfixed or is not consistant.

I tested this on the target dummy yesterday and found different results. I used the glyph of stampede and triggered rabid on my pet and waited for the buff to fall off. I then cast stampede. The 4 pet clones had the rabid buff when I checked them. Possibly this was hotfixed or is not consistant.

i've seen this as well. i'm pretty sure it was fixed (i do know that this was a major issue at one point, but it seems to be fine now)

i think someone asked, but wasn't answered. does fervor affect the pets?

Ask yourself a question: 'How have I made the world a better place today?'.

If your answer isn't legitimate, or meaningful: TRY HARDER - YOU ARE FAILING AT RL!